Sharp LC-70LE757U flickering display

[fjsingel]

Ok, thanks. I am trying the standalone test but I am missing something. I disconnected the 2 cables with the red x as shown in the picture. My guess is that I have to do some jumpering to get the power supply to run. Attached is a picture of the PS connector. Which signals do I need to jumper?

Thanks!

[Diah]

for me the issue could be at main boarder not t-con or panel... best way put back yours org. t-con and do test t.cpn and panel as stand alone... them you will know if yours panel shot or not... read here we do write several time on how to run this stand alone test

[fjsingel]

Ok, similar problem with a Sharp LC-52-64U. I have already replaced the TCON board and it makes no difference. The backlights seem to be working ok. Attached are some pictures with the left and right TCON connectors disconnected. The wavy lines are due to the cameral and are not real.

1) With both TCON connectors connected, I get a fat horizontal line that start heavy on the left and is less pronounced on the right. Everything below the horizontal line flickers.
2) If I disconnect the left TCON connector, the right side of the picture is good, just a little dark in the middle of the screen.
3) If I disconnect the right TCON connector, the left side of the screen has the horizontal bar and everything below it flickers.

Also, if you look closely, you can see a couple thin vertical lines on the far left and far right of the screen. Those don't bother me much while watching, probably a different problem.

I would like to determine if I go after the tabs on this TV, or if the panel is just shot.

Thanks for any advice.

[jbrillon4]

Re: Sharp LC-70LE757U flickering display

BOOM!!!! IT LIVES!!! Once again, thanks to all of you for the info to diagnose and repair my TV. I removed the tabs on the side I determined to be bad and it's perfect! Now my wife thinks I can repair electronics no problem. Uh oh. But the upside is it saved me $3000 and bought me some quality time!!!!

Thanks again to all of you!

[jbrillon4]

Re: Sharp LC-70LE757U flickering display

You guys here are great. A plethora of info. I have a 70 that has this issue. I'm gonna try the fix tonight or tomorrow and advise.

[NoTV]

Re: Sharp LC-70LE757U flickering display

Thanks so much for fixing my problem. I cut the driver tabs off the left side of my tv and it works now! There is a little black chip thing in the driver tab ribbon, two looked burned around the edges. Photo of burned vs good attached.

[bebeqq1231]

Re: Sharp LC-70LE757U flickering display

Hello Everyone,

New to the forum. I have issue with my sharp LC-70LE757U flicking 2 days ago. what's the first step i need to do? I already remove all the screw on the back and i have try to disconnect the t-con board and TV shout off automatically. I also try to hold the left side tab and it stop flicking but picture not not moving. Thank you for your help!

[budwich]

Re: Sharp LC-70LE757U flickering display

can't tell from the "poor" pictures... :-( do some testing. find the small corner cable on either side. they are unclampable / clampable. Disconnect one of them (while not powered), power up and look at the display (get a good picture with an input signal of some sort of test pattern hopefully). Do the same with the other side. Post pictures of the display and go from there.

[Donjay]

Re: Sharp LC-70LE757U flickering display

Hey guys. Noob here.

So I work as a driver for a major shipping company. Went to make a stop I saw a 70" sharp tv with a free sign. I get off deliver their package lady comes out so I ask about it. She says take it's it's free. It has these lines across the screen sucks it went bad a 13months of ownership 1 month after warranty. She said take it if you want. Of course I did. So came home plugged it in yeah there they are. Horizontal lines....


Before I ruin this. Say I remove the back. I'm looking at the back side... will I need to remove the left or the right side?
This is me looking at the backside of tv.

[correrz]

Re: Sharp LC-70LE757U flickering display

Pics as mentioned...

[correrz]

Re: Sharp LC-70LE757U flickering display

Hi folks,

New member so as yet unable to start a new thread for my problem so apologies for piggy-backing off this one!

I've searched the forum and I'm unable to find instructions for troubleshooting/fixing my particular model, a Sharp Aquos LC-42D77X that I bought in about 2010, it's relatively old but was still a great TV but it developed a flickering screen issue about three weeks ago. The model this particular thread relates looks quite different internally and I was hoping for some guidance on how to troubleshooot and isolate the issue as well as how to gain access to the tabs referred to here. Note that I'm a complete novice in this area!

I've removed the rear panel and reeated all the connectors that I can see to no effect. The T-Con on my model is in the middle at the bottom and has three connections on top and two wide ribbon connections on the bottom. I've attached pics for guidance, hopefully someone can guide me through this! Any assistance greatly appreciated.

Cheers,

Davy

[ardo]

Re: Sharp LC-70LE757U flickering display

hey guys, I have similar problem with lc 60le652e. can you tell by this 2 short videos if the problem is the same or is more likely to be a board because the menu is also moving ?

https://youtu.be/uQLKk9EhblM

https://youtu.be/nbcu8_Q4U0w

[Musharuba]

Re: Sharp LC-70LE757U flickering display

I just fixed a 70 inch sharp by removing the left side drivers under that metal guard on the left side under the screen bezel. This post was very helpful.

[j3st3r12]

Re: Sharp LC-70LE757U flickering display

Thanks to everyone on this site I have saved my LC-60EQ10U! If you are looking at the front of the screen, I tore off the right side tabs(could be different for everyone). I figured this out by disconnecting each T-Con connector, which is centered at the bottom on the back of the TV(there are 4 connectors), and turning the TV on to check the picture each time a new cable was removed(3 will always be plugged in when checking). When I removed the far left T-Con connector(looking at the back of the TV), the left side of the screen(looking at the front of the TV) looked perfect and the right side(looking at the front on the TV) was completely white with vertical RGB colored lines. I decided that the right side(looking at the TV) was the one with the problem. I then removed the driver tabs on the same side of the TV that the T-Con cable was disconnected. So since my far left T-Con cable was disconnected(looking at the back of the TV), I removed the right side tabs(looking at the front of the tv), and while the TV was on, I tore each tab off cleanly with a pair of needle nose pliers watching the TV become clearer as I continued to rip all 5 tabs off. Once the 5 tabs are completely off; Unplug TV, plug all T-Con connectors back in so that all 4 connectors are connected, plug the TV back in and boom!
Thank you again Badcaps!!

[Bmwducati]

Re: Sharp LC-70LE757U flickering display

A visual of the current issue after removing the right side tabs, described further in my previous post.

[Bmwducati]

Re: Sharp LC-70LE757U flickering display

I have the LC-70LE757U, had horizontal rolling and flickering, after research and time decided the tab drivers were the issue on the right side (looking at front). I removed the entire right side tabs (all 5) - removed the board and lower ribbon cable that was attached to the right and bottom driver tab boards. No more flickering or lines.

ISSUE: The right side of the screen is "darker" that the left now, with the furthest right 1/8 of the screen being even "darker" yet.

The driver tabs contact points on the lcd appear to be very clean. I have tried replacing the power board (due to slight hum/buzz when powered, with no change in the issue).

Please advise.

[Haleydavis220]

Re: Sharp LC-70LE757U flickering display

Mine is doing the same thing, but I have no idea what to remove, or how to remove it. I basically need pictures to learn.

[budwich]

Re: Sharp LC-70LE757U flickering display

post a picture of your work along with that of the screen image.

[Annq]

Re: Sharp LC-70LE757U flickering display

Hello, so my husband and I just pulled out the left driver tabs and now only one side of the TV is black and the other works well. I feel like we are missing something? We decided to pull the tabs bc the tab burned out the screen and started melting it so we thought it was worth a shot. Any pointers on possibly reviving it? Maybe that wasn't the problem to begin with? Our TV set had all of the symptoms described including the heating and melting of the left corner.

[mojojo]

Re: Sharp LC-70LE757U flickering display

Just fixed one a friend gave to me. I had to remove the driver tabs on the right. Thanks!